Californium element (Cf) is in period 7 of a periodic table. Californium is in the f-block and it is classified as an actinide on the periodic table.
There is a lot more information related to californium which is mentioned in the Information Table given below.
So let’s dive right into it!
Table of contents
- Californium element (Information Table)
- Californium element in Periodic table
- Facts about Californium
- Properties of Californium
- Uses of Californium
Californium Element (Information Table)
The important data related to californium element is given in the table below.
|Appearance of californium||Silvery appearance|
|Atomic number of californium||98|
|Symbol of californium||Cf|
|Atomic mass of californium (most stable isotope)||251 u|
|Protons, Neutrons & Electrons in californium||Protons: 98, Neutrons: 153, Electrons: 98|
|State of californium (at STP)||Solid|
|Period number of californium in periodic table||7|
|Block of californium in periodic table||f-block|
|Category of californium||Inner transition metals|
|Bohr model or Electrons per shell or Electrons arrangement in californium||2, 8, 18, 32, 28, 8, 2|
|Electron configuration of californium||[Rn] 5f10 7s2|
|Orbital diagram of californium|
|Atomic radius of californium (van der Waals radius)||245 picometers|
|Density of californium||15.1 g/cm3|
|1st ionization energy of californium||6.30 eV|
|Melting point of californium||1173 K or 900 °C or 1652 °F|
|Boiling point of californium (estimated)||1743 K or 1470 °C or 2678 °F|
|Crystal structure of californium||Double Hexagonal Close Packing (DHCP)|
|Discovery of californium||By Glenn T. Seaborg, Stanley Thompson, Albert Ghiorso and Kenneth Street (in 1950)|
Also see: Interactive Periodic Table (It has rotating bohr models as well as many other details of all the 118 elements in a single periodic table).
Californium element in Periodic table
The Californium element (Cf) has the atomic number 98 and is located in period 7. Californium is a metal and it is classified as an actinide group element.
Click on above elements in the periodic table to see their information.
Facts about californium
Here are a few interesting facts about the californium element.
- Glenn T. Seaborg, Stanley Thompson, Albert Ghiorso and Kenneth Street discovered the californium element in the year 1950.
- Californium was given its name from “California”.
- Californium is highly radioactive and it is artificially prepared in nuclear reactors.
- Californium has around 20 radioactive isotopes.
- 251Cf is the longest lived isotope and it has half life of 898 years.
Properties of californium
Here is a list of some physical properties and chemical properties of californium.
Physical properties of californium
- Californium metal has a silvery white appearance.
- Californium is a soft and malleable metal.
- At room temperature, californium has DHCP crystal structure and it changes to FCC at higher temperatures.
- The Californium element has an estimated melting point and boiling point of 1173 K and 1743 K respectively.
Chemical properties of californium
- Californium reacts with the oxygen of the air and it starts tarnishing.
- Californium also shows chemical reactions with nitrogen, hydrogen as well as with other aqueous mineral acids.
Uses of californium
Here are some uses of the californium element.
- Californium can be used in neutron emitters.
- 252Ca is used to detect the amount of oils present in the oil wells.
- Cervical cancer as well as brain cancer can also be cured using the isotope 252Ca.
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- It’s Elemental – The Element Californium. (n.d.). It’s Elemental – the Element Californium. https://education.jlab.org/itselemental/ele098.html
- Possolo, et al. (2018, January 4). Interpreting and propagating the uncertainty of the standard atomic weights (IUPAC Technical Report). Pure and Applied Chemistry, 90(2), 395–424. https://doi.org/10.1515/pac-2016-0402
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- Haynes, W. M. (Ed.). (2014, June 4). CRC Handbook of Chemistry and Physics. https://doi.org/10.1201/b17118
- Electronic structure of the elements. (2000, March). The European Physical Journal C, 15(1–4), 78–79. https://doi.org/10.1007/bf02683401
- James A. M. & Lord M. P. (1992). Macmillan’s chemical and physical data. Macmillan.
- Bedford, et al. (1996, April 1). Recommended values of temperature on the International Temperature Scale of 1990 for a selected set of secondary reference points. Metrologia, 33(2), 133–154. https://doi.org/10.1088/0026-1394/33/2/3
- Allred, A. (1961, June). Electronegativity values from thermochemical data. Journal of Inorganic and Nuclear Chemistry, 17(3–4), 215–221. https://doi.org/10.1016/0022-1902(61)80142-5
- Californium – Wikipedia. (2011, July 11). Californium – Wikipedia. https://en.wikipedia.org/wiki/Californium
- Californium – Element information, properties and uses | Periodic Table. (n.d.). Californium – Element Information, Properties and Uses | Periodic Table. https://www.rsc.org/periodic-table/element/98/californium
- Californium | CCDC. (n.d.). Californium | CCDC. https://www.ccdc.cam.ac.uk/elements/californium/
- Thompson, S. G., Street, K., Ghiorso, A., & Seaborg, G. T. (1950, December 1). The New Element Californium (Atomic Number 98). Physical Review, 80(5), 790–796. https://doi.org/10.1103/physrev.80.790
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